It argues that Donuts won’t have enough money to run all 307 domain names if it gets them because it has only raised $100 million to date.

Letters of credit notwithstanding, the community estimates that it will cost approximately $2-3 million to run each gTLD for the ten years to which applicants commit. Thus, if Donuts is granted all 307 gTLDs, there is a question whether its costs, which could be in the range of $600-900 million, may be significantly more than Donuts is able to raise while keeping all 307 gTLDs fully operational.

Economies of scale is something that never entered the USPS’ lexicon.

And trust me, if Donuts manages to get all 307 domain names it will raise plenty more money.